"DORITEK RUBBER CORP. WAS ESTABLISHED IN TAIPEI, TAIWAN SINCE 1985. DORITEK IS A MANUFACTURER OF ALL KINDS OF PRECISION RUBBER SEALING PRODUCTS COVERING VARIOUS FIELD OF INDUSTRIES INCLUDING SEMICONDUCTOR INDUSTRY. WE CAN SUPPLY THOSE PARTS IN NR??BR??IR??BR??NBR??R??PDM??CO??CM??I??SI??KM&FFKM.
WE ARE ALWAYS DOING OUR BEST TO MEET OUR CUSTOMERS' REQUIREMENITS SUCH AS WE EQUIPED AN AUTO INSPECTION MACHINE FROM DOSS. ITALY AND A CLEAN ROON IN 10,000 GRADE.SO WE ARE THE BEST CHOICE FOR YOUR NEEDS IN RUBBER SEALING COMPONENTS.
WE'VE TOOLED WHOLE LINES OF AS-568&JIS-P,G,V,S SERIES AND OVER 500 SPECIAL METRIC SIZES O-RINGS COVERING ITS ID FROM 0.5mm TO 1,350mm.ALL KINDS OF THE RUBBER MATERIALS SUCH AS NBR,CR,EPDM,PA,SILICONE,ECO ,VAMAC,PU,HNBR,FKM,F-SILICONE&FFKM WITH VARIOUS HARDNESS ARE AVAILABLE FROM US.
THE X-RINGS(or QUAD RINGS) IS A NEW LINE TO DORITEK. WE??E TOOLED 98% OF AS-568 SERIES.ALL KINDS OF RUBBER MATERIAL ARE AVAILABLE FROM US.
WE??E TOOLED WHOLE 80 SERIES BACK-UP RINGS AND ALWAYS SUPPLY IT IN NBR 90 DURO AND FKM 90 DURO." ... 
Taiwan